kernel/tools/testing/selftests/bpf/progs/tracing_struct.c, branch linux-rolling-stable

selftests/bpf: Add union argument tests using fexit programs

2025-09-23T19:07:47Z

Add test coverage for union argument support using fexit programs: * 8B union argument - verify that the verifier accepts it and that fexit programs can trace such functions. * 16B union argument - verify that the verifier accepts it and that fexit programs can access the argument, which is passed using two registers. Signed-off-by: Leon Hwang Link: https://lore.kernel.org/r/20250919044110.23729-3-leon.hwang@linux.dev Signed-off-by: Alexei Starovoitov

selftests/bpf: Factor out many args tests from tracing_struct

2024-07-02T14:01:53Z

Factor out many args tests from tracing_struct and rename some function names to make more sense. Meanwhile, remove unnecessary skeleton detach operation as it will be covered by skeleton destroy operation. Signed-off-by: Pu Lehui Signed-off-by: Daniel Borkmann Acked-by: Jiri Olsa Link: https://lore.kernel.org/bpf/20240702121944.1091530-3-pulehui@huaweicloud.com

selftests/bpf: add testcase for TRACING with 6+ arguments

2023-07-13T23:04:56Z

Add fentry_many_args.c and fexit_many_args.c to test the fentry/fexit with 7/11 arguments. As this feature is not supported by arm64 yet, we disable these testcases for arm64 in DENYLIST.aarch64. We can combine them with fentry_test.c/fexit_test.c when arm64 is supported too. Correspondingly, add bpf_testmod_fentry_test7() and bpf_testmod_fentry_test11() to bpf_testmod.c Meanwhile, add bpf_modify_return_test2() to test_run.c to test the MODIFY_RETURN with 7 arguments. Add bpf_testmod_test_struct_arg_7/bpf_testmod_test_struct_arg_7 in bpf_testmod.c to test the struct in the arguments. And the testcases passed on x86_64: ./test_progs -t fexit Summary: 5/14 PASSED, 0 SKIPPED, 0 FAILED ./test_progs -t fentry Summary: 3/2 PASSED, 0 SKIPPED, 0 FAILED ./test_progs -t modify_return Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED ./test_progs -t tracing_struct Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Menglong Dong Acked-by: Yonghong Song Link: https://lore.kernel.org/r/20230713040738.1789742-4-imagedong@tencent.com Signed-off-by: Alexei Starovoitov

selftests/bpf: Add test to access integer type of variable array

2023-04-20T04:29:39Z

Add prog test for accessing integer type of variable array in tracing program. In addition, hook load_balance function to access sd->span[0], only to confirm whether the load is successful. Because there is no direct way to trigger load_balance call. Co-developed-by: Chengming Zhou Signed-off-by: Chengming Zhou Signed-off-by: Feng Zhou Link: https://lore.kernel.org/r/20230420032735.27760-3-zhoufeng.zf@bytedance.com Signed-off-by: Alexei Starovoitov

selftests/bpf: Add struct argument tests with fentry/fexit programs.

2022-09-07T02:51:14Z

Add various struct argument tests with fentry/fexit programs. Also add one test with a kernel func which does not have any argument to test BPF_PROG2 macro in such situation. Signed-off-by: Yonghong Song Link: https://lore.kernel.org/r/20220831152713.2080039-1-yhs@fb.com Signed-off-by: Alexei Starovoitov